Machine for plaster-boards.



L. M. BADER. Y MAOHINIB'IIR' PLASTBR BOARDS. i f U ArrLIoA'rIon rmx 113.12, 1968; `r907,877.l

A' '73 SHBBTS'LSHEHT 1.

` @Houtman y L. M. RADR.- MAGHINB FORTLASTER BOARDS. v `.APPLIOAIQ')N FILED FEB. 12., 1908. I i l 907,877",l Patented Dec.2-9, 1908. A

3 SHEETS-BHEBT 2 whereby .this connection ooe-oe iiber;

respirerorrronf LoUIsAM. BADER, or UPPER MONTGLAIR, NEWJERSEY.

Appiiemonmea February 12, 190s. serial No. 415,572. v

T0. allwhoin' it'may concern: y

it knownfthet' I, Lomsii M. BADER, a' citizen of the United Stetes, residing at Upper lldontcleir,1 in the qounty of Essex and' Staate of N ew Jersey, have invented .e new end useful Machine for Plaster-Boards, ot

Whieh the following is a specification.

This invention. relates to plaster boards,

vand its ohjeet is' to provide en improved method oiilnaking such board's.`

A further object is to provide en apparatus the improved construction may be attained. a

.In the eeoompenying'drawings z--Figure is e plan" view of an apparatus-used to pro duce my improved board. Fig 2 `is e longi tudinal section thereof. AligMS is :t trans verse section thereof. Fig., 4 is a deteil of my perforetor.` Fig. v5 is aperspective view of a portionL of e plaster board formed by my improved method. Fig. 6' is a detail view of e portion of a drying table on en enlarged f Similar numerals ofreference .fire einployed vto indicate' corresponding arts throughout the several guresl of the t raw ings. 'f v The method ywhich has been invented for producing plaster board is th at of deposit-- ing upon ai moving` buse o1"Y iibrous material, such es peper or the like, of a quantity of loose ber, und there is preferably used in There is then intimately mixed with this, While the motion continues, a quantity of plaster of paris or like plasticl materiel which herdens on being wet and dried. At the'sam'e time that the plaster isdeposited on the fiber, it is slightly `tam-pecl down so that there is produced a sheet of loosefmateriel oi' approximately even thiolmess.V -This sheet oi materielv is then passed under eseri'es of perforated )veter pipes or other means for inoistening the f same and give it the requisite degree-oi moisture. surface oiflffaee of the moisteried mess enother sheet of peper orfthe hkeis placed.

` The Wholeis then intimately pressed -te gether, producing e. sheet ol vuniform thiclr ness. rlhis sheet isthen, While still in motion, periolrated, eut off tothe desired lengthA I Speciicetio ,of Letters Pebtent.`

`ings similar to those` on the screen.

. Patented Dec. ee, isos.

Il l, y

and dried.. -To eceomplishfthis result the epperetusherein shown.' end desprilbedhas been invented. .f y

The numeral l0 indioet'es the ir'me -of the apparatus. l.'

At '11 is mounted myfmein -drive Wheel in bearings 12. ThisW-heel y hefdriven by e belt or other` means., as des ed. On the frame l0 ismounted ebelt onv'eyer, -the driving wheel ot' which is 'shown'i'it 13.. rlhis belt voonveyer is preferably'inside of endless 'rubber belting 5.4, and is'supphrted on the upperpart thereof by rollers 15'. is'provided to ret-urn the belt. .n

At 17 l provide e hopperhaving e teaser i8 mounted therein and fr Chute 19 leading therefrom to the belt .14; et or neer the wheel IThis teaser l preferably drive from.. a sprocket 20 mounted o'n the. shalt carrying the 'Wheel 13 hymeans ofblt 2l.. A. hopper 22 is provided to Contain plaster ,of paris, or other materiel desired to form theboerd. in e powdered lterm fand has anozzle or spout extend into e.' screen 2e held to revolvepnn shalt 25. Aduiustable bearing are provided to carry seid shaft and regulate the distanceof sfr-id screen 'from the eonveyer' belt 14. .This screen is eeused to rotate by helting to Ythe Wheel 11 directly, 0.1 by 'any other means An idler 1 (5 deemed edvilshlefw .y v

At 27 l provideshiids e;\;tending between which is emoist'ening devieeQS hereshown as eonsistingoi s` pair o? perforated pipes extending eeross the conveyer heit 14. f

At 29 is e presser roll carried on a shaft 30 and Whit-:h is provided lwith edjusteble beer- This presser roll 29 isso belted or geared that the periphery thereof willhe'vethe seme linear velocity as Vthe belt 14. L I

'At 3i is mounteds roll of paper or like me# terial, and eseeondroll is similarly mounted v et 82, e guide 33 being provided therefor. Following this step upon the upper Beyond .'theidler Wheel 16 is held a table instable hearings 36 is perforatiug wheel 97 mg therefrom downvif'ard and 34. .Mounted on. asheft 'earried in edprovided with e; seriesoi" pins 38, extending.

thereiirom.` A Companion performing wheel 39 is mounted on e. sheit 40 immediately helovv the Wheel 3'? end-1s provided with a series 'loo of ockets or slots 41 adapted to receive the ends of the pins 38. The drying table 42 is arranged beyond the perforating Wheels and consists of rollers 43 in frictional contact with rollers 44 which are driven from a shaft 45 by means of a chain belt or such other gearing las I may desire to use. A knife 46 is mounted near the perforating rolls in said table, and while it is here shown as being hand operated ,it is to be understood that l. may use this knife, or any other cutting oli device, as .I see fit, as the exact form thereof is not essential. y i

Iii-the operation of the device as shown, the machine being in motion, a quantity of fibrous material contained in hopper 17 is forced down the spout 19 by the teaser 1S bedeposited on a sheet of paper or the like supplied `from the roll supported at 31 and carried on a belt 14 near the end thereof. This sheet of fibrous material passes under the screen 24, the powdered plaster` contained therein havin been fed from the hopper 22 being evenly istributed on the fibrous material. Adjustment is made of the bearings 26 so that a light -pressure is obtained on the surface of the mixture, tlius rendering'the sheet of approximately even thickness at this point wit out compacting the same, so that moisture could not be introduced. As the sheet passes along, itis supported by the belt 14 and comes under the inoistening device 28, the shields 27 serving to prevent the Water or other' source of moisture from running oii' at the side. While passing under this "point, the mass receives the proper amount of moisture necessary to cause lirm setting.

' Immediately after having been moistened,

the plastic mass passes under the presser roll 29, at the same time having applied .to the upper surface thereof a sheet of paper or the like fed from the roll supported at 32. By means of the adiustable bearings ol' the pressure roll 29, suiiicient force is applied to the sheet at this point to squeeze out superlluous moisture and to compact the same intoa iirm sheet of even thickness. Passing along the conveyer belt, the sheet then runs over the table 34 between the perforators 37 and 39, and has punched therein a series of holes. From' there the sheet rolls out through the drying rolls 43 and ma be cut oill at any desired length by the knife 46.

There may be many changes made in the exact form and construction ofthe apparatus as herein described without aiieeting the method of forming the sheet or the principles of the apparatus.v It is not, therefore, deaired to confine the invention to the exact form here shown, but toinclude all such as :properly 'come within the scope thereof.

claim:- 1. The herein described method oi' forming a plaster board consisting in de ositing on a moving base of paper or the lire, a tibi-ous 3. In a machine for the manufacture of I plaster boards, a frame, means for carrying a web oi paper or the like thereon, means lor de )ositing a sheet of iiber on said paper, it revo ving screen for depositing plaster o r the like on said iiber and mixing the same therewith, means for moistening the uniss of plaster and ber, means for applying a second sheet oi paper to the face thereof, and means for pressing the sheet thus formed.

- 4. In a machine for the manufacture of plaster boards a trame, means for carrying a web of paper thereon, moans for depositing a sheet oi fiber on said paper, a revolving screen for depositing plaster or the like on said fiber means for moistening the mass of plaster and fiber, means for applying a second sheet of paper to the face t iercof, means. for pressing the same intimately together, and means for peii'orating theI sheet thus l'ormcd.

5. In a machine for the manufacture oi plaster boards, a frame, an endless belt cai'- ried on the frame, means ior supplying paper or the likel'roin a roll to said endless belt, means for depositing the sheet oi liber on said paper, a rotary screen arranged to contain plaster and deposit thc same evenlyron saidiiber, and further arranged to lightly press said plaster and iiber together, means i'or nioistening the sheet thus formed, und means i'or simultaneously applying a second l sheet oi' paper to the face of said sheet and pressing the hoard.

6. ln a machine i'or the manufacture oi plaster' boards, a i'ranie, an `yndlcss belt carried on the frame, means for supplying paper or the/like from a roll to said endless belt,

means for depositing the sheet of fiber on said paper, a rotary screen arranged to contain plaster and deposit the same evenly o'n` .depositing fibrousu-mlterial on seid roll, of pafy pairof-peiforating rolls adapted `(zo perforate .4 per, a ho per containing plaster or the like, a said' board. v H s creen adgp ed to reeive the eon'tentsof said In testimony that I elaimftheforegomg as hopper and distribute them evenly on said .xny own, I have, hereto alxed my slgriature g 5 fiber and fellt1 the sami together, means for. 1n the presence of two witnesses.

moistening t e s eett;v us formed a resserA -1 roll, means for car g asecond :0,11 o paper l M or'the like carried y said freme,` end means Witnesses; :I e Y vfor guiding said pe er under the presser roll H0131'.M.llNING,` 10 to form the face ofptheplaste' boardfand a EDNA I. NEILL'. 

